ELI5: Explain Like I'm 5

Concordance correlation coefficient

The Concordance Correlation Coefficient (CCC) is a way to measure how well two sets of numbers match each other. It is used when comparing two sets of numbers that are related in some way, like the actual height of a person and the height that their doctor recorded for them.

The CCC looks at how close the two numbers are to each other. It does this by measuring the difference between them and then seeing how often the difference is the same, no matter which order the numbers are compared.

To figure out the CCC, it takes the difference between the two numbers and then divides it by the sum of the two numbers. This will give you a number between zero and one.

The higher the number is, the better the two sets of numbers match each other. A CCC of one means that the two sets of numbers are an exact match, while a score of zero means that the two sets of numbers are not related at all.